<?php
/**
 * Import and export of endpoints and settings as JSON, for copying a setup between sites.
 *
 * @package Hookbird
 */

namespace Hookbird;

defined( 'ABSPATH' ) || exit;

/**
 * Transfer.
 */
class Transfer {

	/**
	 * Export data.
	 *
	 * @param bool $include_secrets Include signing secrets.
	 * @return array
	 */
	public static function export( $include_secrets = false ) {
		$endpoints = array();
		foreach ( Endpoints::all() as $endpoint ) {
			$item = array(
				'name'       => $endpoint['name'],
				'url'        => $endpoint['url'],
				'events'     => $endpoint['events'],
				'format'     => $endpoint['format'],
				'headers'    => (object) $endpoint['headers'],
				'conditions' => $endpoint['conditions'],
				'options'    => (object) $endpoint['options'],
				'active'     => $endpoint['active'],
			);
			if ( $include_secrets ) {
				$item['secret'] = $endpoint['secret'];
			}
			$endpoints[] = $item;
		}
		return array(
			'plugin'      => 'hookbird',
			'version'     => HOOKBIRD_VERSION,
			'exported_at' => gmdate( 'c' ),
			'settings'    => Settings::all(),
			'endpoints'   => $endpoints,
		);
	}

	/**
	 * Import data.
	 *
	 * @param array $data            Decoded export.
	 * @param bool  $import_settings Also replace settings.
	 * @return array|\WP_Error { created: int, errors: string[] }
	 */
	public static function import( array $data, $import_settings = true ) {
		if ( ! isset( $data['plugin'] ) || 'hookbird' !== $data['plugin'] || ! isset( $data['endpoints'] ) || ! is_array( $data['endpoints'] ) ) {
			return new \WP_Error( 'hookbird_bad_import', __( 'This file is not a Hookbird export.', 'hookbird' ) );
		}

		if ( $import_settings && isset( $data['settings'] ) && is_array( $data['settings'] ) ) {
			update_option( Settings::OPTION, Settings::sanitize( $data['settings'] ), false );
		}

		$created = 0;
		$errors  = array();
		foreach ( array_slice( $data['endpoints'], 0, 200 ) as $index => $item ) {
			if ( ! is_array( $item ) ) {
				continue;
			}
			$item['headers'] = isset( $item['headers'] ) ? (array) $item['headers'] : array();
			$item['options'] = isset( $item['options'] ) ? (array) $item['options'] : array();
			$secret          = isset( $item['secret'] ) ? (string) $item['secret'] : '';
			$result          = Endpoints::create( $item, $secret );
			if ( is_wp_error( $result ) ) {
				/* translators: 1: position in file, 2: error message. */
				$errors[] = sprintf( __( 'Endpoint %1$d: %2$s', 'hookbird' ), $index + 1, $result->get_error_message() );
			} else {
				++$created;
			}
		}

		return array(
			'created' => $created,
			'errors'  => $errors,
		);
	}
}